The Advanced Anti-Colic Bottle combines Tommee Tippee's breast-shaped teat with a unique 3-piece anti-colic system to provide optimal aeration during feeding. The triple aeration disc causes air to circulate downwards through the tube, while the star valve prevents milk from entering the tube. The nipple is shaped like a breast because babies prefer it that way. It is made of soft silicone for a "mom's skin" effect and has helical rings that reproduce the natural movement and bending of the mother's breast. By having a wider neck, the baby can hold on better and allows for continuous feeding. For added peace of mind, the thermosensitive aeration tube helps us know if the milk is at the right temperature. If it is blue, it is appropriate for feeding, but if it turns pink, the milk is warmer than recommended (37 °C). 84% less colic: After consulting 189 mothers and fathers who had tried this product, 84% declared that the bottle effectively reduced the symptoms of colic, reducing gas, vomiting and discomfort. Recommended by moms: 95% of mothers would recommend Tommee Tippee Advanced Anti-Colic bottles, according to a study conducted in 2021 with 524 people who use the brand's bottles. Compact shape: Tommee Tippee bottles have been designed to be held in the most natural position during feeding, allowing you to keep your baby closer. No bisphenol A (BPA) For your complete peace of mind, none of our products contain bisphenol A (BPA). Product specifications Size: 260 ml, lilac color Teat included: Slow Flow (no. 1: from newborn) Material: Silicone teat, Plastic bottle (PP) Compatible with Tommee Tippee Advanced Anti-Colic Teats.